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  Forest Saccharomyces paradoxus are robust to seasonal biotic and abiotic changes

Boynton, P. J., Wloch-Salamon, D., Landermann, D., & Stukenbrock, E. H. (2021). Forest Saccharomyces paradoxus are robust to seasonal biotic and abiotic changes. Ecology and Evolution, 11(11), 6604-6619. doi:10.1002/ece3.7515.

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Ecology and Evolution - 2021 - Boynton - Forest Saccharomyces paradoxus are robust to seasonal biotic and abiotic changes.pdf (Publisher version), 883KB
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Ecology and Evolution - 2021 - Boynton - Forest Saccharomyces paradoxus are robust to seasonal biotic and abiotic changes.pdf
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Boynton, Primrose J.1, Author           
Wloch-Salamon, Dominika, Author
Landermann, Doreen1, Author           
Stukenbrock, Eva H.1, Author           
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1Max Planck Fellow Group Environmental Genomics, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2068284              

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Free keywords: environmental yeast, killer yeast, microbial ecology, rapid adaptation, selection
 Abstract: Microorganisms are famous for adapting quickly to new environments. However, most evidence for rapid microbial adaptation comes from laboratory experiments or domesticated environments, and it is unclear how rates of adaptation scale from human-influenced environments to the great diversity of wild microorganisms. We examined potential monthly-scale selective pressures in the model forest yeast Saccharomyces paradoxus. Contrary to expectations of seasonal adaptation, the S. paradoxus population was stable over four seasons in the face of abiotic and biotic environmental changes. While the S. paradoxus population was diverse, including 41 unique genotypes among 192 sampled isolates, there was no correlation between S. paradoxus genotypes and seasonal environments. Consistent with observations from other S. paradoxus populations, the forest population was highly clonal and inbred. This lack of recombination, paired with population stability, implies that S. paradoxus evolved the phenotypic plasticity needed to resist seasonal environmental fluctuations long ago, and that individual S. paradoxus are generalists with regard to seasonal environments. Similarly, while the forest population included diversity among phenotypes related to intraspecific interference competition, there was no evidence for active coevolution among these phenotypes. At least ten percent of the forest S. paradoxus individuals produced “}killer toxins{”, which kill sensitive Saccharomyces cells, but the presence of a toxin-producing isolate did not predict resistance to the toxin among nearby isolates. How forest yeasts acclimate to changing environments remains an open question, and future studies should investigate the physiological responses that allow microbial cells to cope with environmental fluctuations in their native habitats.Competing Interest StatementThe authors have declared no competing interest.

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Language(s): eng - English
 Dates: 2021-02-252020-10-202021-03-162021-04-072021-06-16
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1002/ece3.7515
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Project name : National Science Centre of Poland
Grant ID : 2017/25/B/NZ8/01035
Funding program : Max Planck Fellowship
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Project name : Institute of Environmental Sciences
Grant ID : N18/DBS/00003
Funding program : -
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Title: Ecology and Evolution
Source Genre: Journal
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Publ. Info: John Wiley & Sons, Inc.
Pages: - Volume / Issue: 11 (11) Sequence Number: - Start / End Page: 6604 - 6619 Identifier: ISSN: 2045-7758
CoNE: https://pure.mpg.de/cone/journals/resource/2045-7758